WED9LC6816V
White Electronic Designs
256Kx32 SSRAM/4Mx32 SDRAM
External Memory Solution for Texas Instruments
TMS320C6000 DSP
DESCRIPTION
FEATURES
The WED9LC6816V is a 3/3V, 256K x 32 Synchronous
Pipeline SRAM and a 4Mx32 Synchronous DRAM array
constructed with one 256K x 32 SBSRAM and two 4Mx16
SDRAM die mounted on a multilayer laminate sub-
strate/ The device is packaged in a 153 lead, 14mm by
22mm, BGA/
n Clock speeds:
SSRAM: 200, 166,150, and 133 MHz
SDRAMs: 125 and 100 MHz
n DSP Memory Solution
Texas Instruments TMS320C6201
Texas Instruments TMS320C6701
n Packaging:
The WED9LC6816V provides a total memory solution
for the Texas Instruments TMS320C6201 and the
TMS320C6701 DSPs The Synchronous Pipeline SRAM
is available with clock speeds of 200, 166,150,v and
133 MHz, allowing the user to develop a fast external
memory for the SSRAM interface port /
153 pin BGA, JEDEC MO-163
n 3/3V Operating supply voltage
n Direct control interface to both the SSRAM and
The SDRAM is available in clock speeds of 125 and
100 MHz, allowing the user to develop a fast external
memory for the SDRAM interface port/
SDRAM ports on the C6x
n Common address and databus
n 65% space savings vs/ monolithic solution
n Reduced system inductance and capacitance
The WED9LC6816V is available in both commercial
and industrial temperature ranges/
FIGꢀ 1 PIN CONFIGURATION
PIN DESCRIPTION
TOP VIEW
A0-17
Address Bus
Data Bus
1
2
DQ23
DQ22
VCCQ
DQ21
DQ20
VCCQ
NC
3
VCC
VCC
VCC
VCC
VCC
VCC
NC
4
VSS
5
6
7
8
9
DQ0-31
SSCLK
A
B
C
D
E
F
DQ19
DQ18
VCCQ
DQ17
DQ16
VCCQ
NC
VSS
VSS
VSS
NC
VSS
VSS
VSS
VSS
NC
NC
NC
NC
NC
VSS
VSS
VSS
NC
NC
VCC
VCC
VCC
VCC
VCC
VCC
A2
DQ24 DQ28
DQ25 DQ29
SSRAM Clock
VSS
SDCE
SDA10
VSS
SSADC SSRAM Address Status Control
SDWE
VSS
VCCQ
VCCQ
SSWE
SSOE
SSRAM Write Enable
SSRAM Output Enable
SDRAM Clock
DQ26 DQ30
DQ27 DQ31
VSS
SDCLK
VSS
SDCLK
SDRAS
VSS
VCCQ
A4
VCCQ
A5
SDRAM Row Address Strobe
G
H
J
SDRAS
VSS
SDCAS
VSS
SDCAS SDRAM Column Address Strobe
SDWE SDRAM Write Enable
SDA10 SDRAM Address10/auto precharge
NC
NC
A8
A1
A3
A10
A6
A7
A9
VSS
VSS
A0
A11
A12
K
L
A17
NC/A18
NC
NC/A19
NC
VSS
VSS
NC
NC
VCC
VCC
VCC
VCC
VCC
VCC
A13
A14
BWE0-3
SSRAM Byte Write Enables
SDRAM SDQM 0-3
NC
BWE2
BWE0
VSS
BWE3
BWE1
VSS
A15
A16
M
N
P
R
T
VCCQ
DQ12
DQ13
VCCQ
DQ14
DQ15
VCCQ
DQ11
DQ10
VCCQ
DQ9
DQ8
VCC
VCC
VCC
VCC
VCC
VCC
VCCQ
DQ4
DQ5
VCCQ
DQ6
DQ7
VCCQ
DQ0
DQ1
VCCQ
DQ2
DQ3
SSCE
SDCE
VCC
Chip Enable SSRAM Device
Chip Enable SDRAM Device
Power Supply pins, 3:3V
VSS
SSCLK
VSS
VSS
VCCQ
Data Bus Power Supply pins,
3:3V (2:5V future)
SSADC
SSOE
SSWE
SSCE
VSS
Ground
U
NC
No Contact
Contact factory for ordering informationꢀ
September 2003 Rev 1
ECO #16493
1
White Electronic Designs Corporation (508) 366-5151 wwwꢀwhiteedcꢀcom